AbstractFeeModule
Inherits: IAbstractFeeModule
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State Variables
ZERO_FEES_IN_BPS
Use SafeERC20
for any ERC20 token in the conversion
represents 0 bps in fees (the minima of fees or 0%)
uint256 public constant ZERO_FEES_IN_BPS = 0;
MAX_FEES_IN_BPS
represents 10000 bps in fees (the maxima of fees or 100%)
uint256 public constant MAX_FEES_IN_BPS = 10000;
_feesInfo
mapping(bytes32 => FeeInfo) private _feesInfo;
Functions
getFeeInfo
function getFeeInfo(bytes32 tokenFeeKey_) public view override returns (FeeInfo memory);
getFeeInBps
function getFeeInBps(bytes32 tokenFeeKey_) public view override returns (uint256);
getFeeRecipient
function getFeeRecipient(bytes32 tokenFeeKey_) public view override returns (address);
calculateFeeAmount
function calculateFeeAmount(uint256 tokensAmount_, uint256 feeInBps_)
public
pure
override
returns (uint256 feeAmount_);
_setTokenFee
Shouldnt arrise due to validation, but being doubly sure, we can't compute incorrect fees.
function _setTokenFee(bytes32 feeKey_, FeeInfo memory feeInfo_) internal;
_transferFees
function _transferFees(bytes32 feeKey_, IERC20 token_, address tokenSender_, uint256 tokensAmount_)
internal
returns (uint256);
_validateFeeInfo
Validates the FeeInfo, specifically validates the non zero address of the feeRecipientAddr and the range for the feeInBps (0 to MAX_FEES_IN_BPS).
function _validateFeeInfo(FeeInfo memory feeInfo_) internal pure;
Parameters
feeInfo_
FeeInfo
the FeeInfo to validate. throws AbstractFeeModuleInvalidFeeRecipient
if the feeRecipientAddr is a zero address throws AbstractFeeModuleInvalidFee
if the feeInBps is not in the valid range (ZERO_FEES_IN_BPS to MAX_FEES_IN_BPS)